Part of the Kubota Repair Manuals.
This Kubota Shop Manual covers the KX91-3 and KX101-3 compact excavators, powered by the D1503-M-BH-1 and D1503-M-BH-2 diesel engines. It is the factory service document, publication 97899-60520, running 610 pages.
The manual is split into machine body, engine, hydraulic system, and electrical system, each with mechanism and service sections, plus optional units. It gives the construction and function of the major components together with troubleshooting charts, servicing specifications, and torque values, such as a main relief pressure of 23.5 MPa on the KX91-3 and 25.0 MPa on the KX101-3, and valve clearance of 0.18 to 0.22 mm cold.
It is the correct resource for diagnosing hydraulic weakness, travel and swing faults, and engine trouble on these excavators. It is delivered as a downloadable PDF you can search, print, and use on any device.
What's Inside This Kubota KX91-3, KX101-3 Manual
| System | Pages | Key Topics |
|---|---|---|
| I. General | Body and Engine Identification Marks, Safty Precautions for Servicing | |
| Ii. Machine body(Mechanism Section) | Front Attachment (Greasing Points, Bucket Interchangeability), Swivel Frame and Components (Accel Lever, Auto Idle-Version, Accel Cable, Swivel Bearing) | |
| Ii. Machine body(Service Section) | Specifications (Machine Weight, Machine Specifications, Lever Stroke and Operating Force, Dimensions of Parts) | |
| Iii. Engine(Mechanism Section) | Specification & Features (Specifications), Fuel Injection Pump (Structure, Precaution of Removing Reassembly) | |
| Iii. Engine(Engine WSM (Addition)) | General (Engine Identification, Tightening Torques, Troubleshooting, Servicing Specifications, Maintenance Check List, Check and Maintenance, Special Tools) | |
| Iv. Hydraulic system(Mechanism Section) | Features of Hydraulic System, Hydraulic System Specifications, Main Pump (Structure & Specifications, Performance Curve) | |
| Iv. Hydraulic system(Service Section) | Troubleshooting (Common Circuit, Front Attachment, Swivel Circuit, Travel Circuit) | |
| V. Electrical system(Mechanism Section) | Outline, Components & Harness Layout, Couplers, KX91-3, 101-3 Standard Version | |
| V. Electrical system(Service Section) | Electrical System, Front Attachment, Engine Electrical System, Auto Idle System, Auto Glow Controller, Auto Release Controller | |
| Vi. Optional Units | A. KTA-Version (Actual Service Port Flow : KX91-3 KTA-Version Only, Breaker Performance Test Sample : KTA-Version Only), B. KTC-Version |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Travel motor Relief valve tightening torque | 58.8 ~ 68.6 N·m (6.0 ~ 7.0 kgf·m) | p. 374 |
| Travel motor Plug tightening torque | 58.8 ~ 68.6 N·m (6.0 ~ 7.0 kgf·m) | p. 374 |
| Swivel motor Relief valve assembly tightening torque | 58.8 ~ 68.6 N·m (6.0 ~ 7.0 kgf·m) | p. 245 |
| Swivel motor Shockless piston Plug tightening torque | 58.8 ~ 68.6 N·m (6.0 ~ 7.0 kgf·m) | p. 245 |
| Pilot filter Durable pressure | 70kgf/cm2 | p. 256 |
| Pilot filter Filtering rate | 10 µ | p. 256 |
| Fuel filter Ring nut tightening torque | 15 N·m (150 kg·cm) | p. 92 |
| Fuel filter Filtering area | 800cm2 | p. 92 |
| Air filter Outer element Filtering area | 1.0m2 | p. 93 |
| Air filter Inner element Filtering area | 262cm2 | p. 93 |
| Fan belt deflection (force for check) | 98 N (10 kgf, 22 lbs) | p. 130 |
| Fan belt deflection (factory spec) | 7.0 to 9.0 mm (0.28 to 0.35 in.) | p. 130 |
